Improved machine for rolling, shaping, and forging file-blanks, fliers



NrrED l STATES? PATENT OFFICE..

JAMES DODGE, OF WATERFORD, NEW YORK.

IMPROVED MACHINE FOR ROLLING, SHAPING, AND FORGING FILE-BLANKS, FLIERS,AND OTHER ME- TALLIC ARTICLES OF SMALL DIMENSIONS.

Specilication forming part of Letters Patent No. 511,310, dated May 1,1866.

To all whom it may concern.:

Be it known that I, JAMES DODGE, of Waterford, in the county of Saratogaand State of New York, but now temporarily residing at Manchester, inthe county of Lancaster, Great Britain, have invented certain new anduseful Improvements in Apparatus for Rollin g, Shaping, and Forging FileBlanks, Fliers, and other Metallic Articles of Small Dimensions; and- Ihereby declarey that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings.

The invention relates to machinery for rolling irregular forms, forwhich Letters Patent of vthe United States were issued to me on the 25thday of July, 1865, being a novel construction of self-acting mechanismfor rolling and forging small articles of metal, so arranged that thevarious operations may be eiiected in one machine.

The improvements consist in the combination and use of a pair of rollerswith dies or matrices, when required, (for rolling the metal,) and apair of jaws or levers for forging. The lower roller is furnished withtappets or lifters which act upon the movable lever or jaw ofthe pair ofjaws for forging or pressing the metal, the whole being operated bygearing. The power is communicated to the rolls by means of a clutch boxhaving -steel faced clutches and worked by levers actuated by a ytreadle. The upper roller is furnished with a swell or cam, which, at acertain part of the revolution, lifts a bolt that raises the clutchboXlever and throws the clutch out of gear, and simultaneously a projectionon the same roller comes into contact with a short arm or stop, andeffects the instantaneous stoppage of the rollers. This takes place atevery entire revolution of the rollers, so that the attendant hassufficient time to adjust the metal and to place it properly under therollers or jaws.

The operator places his foot on the treadle and withdraws the short armand bolt. The latter releases a spring which forces the clutch box intogear and starts the machine.

The second part of my invention relates to a novel method of regulatingthe distance between the rollers; and it consists in the use of twowedges which are inserted in the pedestals above the bearings of the toproller, and

are moved nearer to or farther from each other by aright-and-left-handed screw, which is provided with a collar that isheld by snugs in a central block. By turning this screw the wedges aremoved and increase or decrease the distance between the rolls. The stepsof the top roller are held up so as to bear against the wedges by meansof springs inserted be tween the steps ot' the rollers.

In order that the invention may be better understood and explained indetail, I have hereunto attached sheets of' drawings made upon a scaleof about three inches to the foot, similar letters of reference beingmarked upon corresponding parts on all gures.

Fi gurel represents an elevation viewed from the left-hand side of therolling-machine, showing the peculiar arrangement and construction ofthe apparatus in connection with the clutch-box for starting andstopping such machine. Fig. 2 represents a front elevation of theapparatus, showing more particularly the position of the rollers, withdies or matrices formed therein for rolling the metal, and the pair ofjaws or levers, also supplied with dies or matrices for forging. Fig. 3represents an elevation viewed from the righthand side of the machine,illustrating more clearly the jaws or levers for forging, and also thearrangement of mechanism for actuating the same;

and Fig. el represents an arrangement of tappets for actuating the underjaw in place of the eccentrics. e

In Figs. 1, 2, 3, and 4, a a is the framing of the machine supportingthe rollers b and b. The top roller, b', is capable of being raised fromor lowered nearer to the bottom roller, b, (according to the thicknessof metal required to be operated upon,) by the wedges c c and springs dd, which,being inserted between the bearings of the two rollers, have atendency to raise the top roller, b', the distance between such rollersbeing regulated by the counter action of the Wedges c c, which are movednearer to or farther from each other by a right-and-lefthanded screw, e,which is provided with a collar, j', which is held by the snug-s g g ina central block, so that by turning the screws c the wedges are movedand increase or decrease the distance between the rollers. The top boxZinto gear and starts the machine.

roller, b', is furnished with a swell or cam, h,

which, at a certain part of the revolution, lifts the bolt z', whichraises the lever k in connection therewith and actuates the clutch-boxl, which is furnished with steel clutches, thereby ihrowin g such steelclutches out of gear. Simultaneously the projection m on the roller bcomes into contact with the short arm or stop n secured on the bellcranklever o, and thus effects the instantaneous stoppage of the rollers band b', which stoppage is effected at every entire revolution of therollers, thereby giving the attendant sufcient time to adjust the metalto be operated upon under the rollers or jaws; and it will be evidentthat by adding 4lifts or cams the rollers may be stopped more frequentlythan once every revolution.

When ready to start the operator places his foot on the treadle 19,which immediately withdraws the short arm or stop n and` the bolt i.:The latter releases the spring 9, which forces;

(through the medium of the lever k) the clutch- The movement or actionof the under lever or jaw employed for forging blanks, in conjunctionwith the fixed top jaws, s, is obtained by means of the eccentric tsecured on the pinion or drivin g-shaft u. (Seen in Fig. l.) The rollersZ and b and the pair of jaws r and s are provided with dies or matricesto suit the different form and shape of the le-blanks -or other metallicarticles required.

The grooves 1,2, and 3 in the rollers and the recesses in the jawsexhibit the form of matrices employed for rolling and forging round,half-round, and angular file-blanks, and are shown as examples. Themovement of this 'lower jaw mayalso be effected by means of a cam ortappets, if preferred, as seen in Fig. 4.

Having now described the nature of the said invention, together with themethod of carrying the same into practical effect, I Wish it to bedistinctly understood that I claim- 1,. The novel combination,in onemachine, of

lone or more pairs of jaws or levers containing ldescribed or by othermechanical equivalents.

`3. The combination and use of -the wedges and springs, constructed andarranged asdescribed, for regulating the distance of the rollers.

4. The general construction, arrangement, and combination of theapparatus for rolling, shaping, and forging file blanks, fliers, andother metallic articles of small dimensions, as hereinbefore described.

In testimony whereof I have signed my name to this .specification beforetwo subscribing witnesses.

JAMES DODGE.

Witnesses:

EDWARD CLAY, J AMES DAVENPORT.

